For most chest x-ray studies, what is usually done? a. There ...

[savannahhooper]

For most chest x-ray studies, what is usually done?
 
  a. There is a full exhalation.
  b. There is a full inspiration.
  c. Separate inspiratory and expiratory films are taken.
  d. The patient is told to pant to provide a middle lung volume.

Question 2

Continuous positive airway pressure (CPAP) is useful in the management of the patient with obstructive sleep apnea because it:
 
  a. pushes air into and out of the lungs like a mechanical ventilator.
  b. prevents airway collapse.
  c. stretches the J receptors in the chest wall to stimulate breathing.
  d. delivers a tidal volume breath to the patient.

[scrocafella]

Answer to Question 1

B
The vast majority of chest radiographs are taken at full inspiration when the breath is held. A patient with obstructive lung disease may also have an expiratory film taken to compare the position of the hemidiaphragms. Panting should not be done because the movement would blur the image on the film.

Answer to Question 2

B
CPAP prevents the collapse of the hypotonic upper airway tissues. It is standard treatment in a patient with obstructive sleep apnea. The CPAP is delivered to the patient through a nasal (or full face) mask. CPAP does not breathe for a patient like a mechanical ventilator does.